Milking-machine.



Patented Aug. 27

i 2 SHEETS-SHEET 1.

c. H. PAARMANN.

MLLKING MACHINE.

APPLICATIONFILED SEPT. '12, I916.

1,2 7/6,803 Patented Aug. 27, 19-18.

2 SHEETS-SHEET 2.

i i we "r in. n. eaanivmnn, panama. Iowa.

Maxine-MACHINE,

Application and se teniiier 12, 1916. Serial in. 119,730;

To all whom it may concern:

Be it known that 1, (Jam; H. Paanimrqx, a citizen of the United States,residing at Delmar, in the county of Clinton. State of Iowa, haveinvented certain new and useful relates to milking niaand therebyprevent injury to the animal.

A further object of the invention is to provide a. milking machine whichwill obviate the i'iecessity of finishing the milking operation byhandand which simple in construction, efiicicnt, readily taken apart forcleaning or other purposes, easilv assembled,

and. well adapted tomeet the requirements of a practical machine. 7

With the above and other objects in view the invention consists in thedetailsv of com struction and in the arrangement and combination ofparts to be hereinafter more full described and particularly pointed outin the appended claim.

In describin the invention in detailrcteren'ce will be had to theaccon'ipanving drawings wherein like characters of reference denotecorresponding parts in the scv oral views, and-iii which v Figure 1 is aview in elevation ol the improved niilking machine also disclosing thepump of the ap 'iara'tus.

Fig. 2, a vertical section of the vacuum case with the parts in theposition they would occupy before the milking operation is' instituted.Fig. 3, a view similar to Fig.2 with the parts in the position theywould occupy during the milking operation.

Fig. i, a section on the line ;'l4i of Fig. 2. Fig. 5, a section on theline 55 ot Fig. 2

Fig.6, a vertical section through the pump ofthe apparatus.

Fig. 7,21 plan view of the vacuum case. and Fig. 8. a. perspective Viewof the lloat and valve.

Referring to the drawing the improved milking'iiiachine is Shown ascomprising a,-

vacuum case It which includes a top section i 10. an intermediatesection ll, and a bottom section 12 the latter being provided with anopening 13 around which is torn-ied a threaded nipple it. Disposedwithin the casing ii is a float and valve guide l3, said guide beingSpecification of Letters Patent. Patented-Aug; 3833113 3,

removable from the case and, having laterallugs I?) which engage theupper edge of thebottom section 12 for the puiposc ot sup 7 rtin theuide iii orrect iositioii within i the case A. cDisposcdwithin the guideB is a float IG t'rom which depends a rod 1? which carries on its lowerend a valve" 18 adapted to close the opening 13 when the ii'oat; 1% isin its lowermost position. :Rising from the lloat- 16 are rods 19 bothof which are looseiv passed through in a dished partition 20 formed iiithe upper portion of the top scc tion- 10. -()ne of the rods isextendedand slidahly engaged through an opening in the top sect-ionaround which is built up a tubu lai' extension 21 closed by a cap 22.'lhese rods 19 serve to hold the lioat 16. againstaxial rotation aswill'bc obvious. mounted in the top section it) is a rod '23 the iniicrcnd of .which is coniiecicd to thcilo'at l6 li a chain it.

The outer end of the rod 23 carries a i'ingio torconvenience in slidingthe rod outwardly to hit the tloat it? and of course the valve 13'. Avertical post '15 providing communication between the bottom of thefloat chamber l3 and the section 12 is adapted to he ad iustahtvcontracted l v ,ed to be engaged pipes leading from suit- Engaged on thenipple 1i aiile teat. cups. is one end oi a suction pipe 23. This pipeincludes a section 29 provided with a sight glassffii) and 'lurtherincludes an angle terniinah one arm of which is engaged with the section29.n'hile the other 'arm is adapted to be (f0lili(.(i((l,\\'lii1 asuction pump (3 through the medium of a pipe 31. The terminal ii isprovided with an opening 32 adapted to be covered and uncovered byavalve 33 disposed within the terminal 30. Mounted on the exterior ot thetern'iinai 30 is a. bracket which has'pivoted thereon an angle leverincluding arins and. 36,

Slidablv the latter of which is connected to the valve 33 by a chain 37.This valve 33 is normally held closed by a spring 38 mounted on thetern'iinal 30.

Passed through the lateral extension on the upper end of the arm is aneye bolt 39, which has its lower end passed through a flange of theterminal 30. A retractile spring 40 is secured to said bolt adjacent itsupper end and to the terminal 30, the tension of this spring beingadjusted by a nut 39* threaded on the eye bolt above the lateralextension and bearing thereagainst. A chain 25 connects the ring of thevalve lifting rod with the eye of the bolt 39 to close the valve uponmanual raising of the float 16.

In some cases the spring 38 is not strong enough to hold the valve 33closed to eitect thorough milking and in such instances the spring 40 isadjusted sufficiently to reach the end desired. said spring 40 beingconsiderably stronger than the spring The pump C is of the double actiontype and includes a cylinder 42 in which is slidable a piston 43. Oneend of the cylinder -12 is provided with an opening 44 closed by aninwardly opening valve 45 and surrounded by a nipple 46 to which isconnected one end of the pipe 31. The opening 41 is connected with theopposite end of the cylinder ll bv a by-pass 457 and the end of the bypal7 remote from the opening ll is controlled by an inwardly opening checkvalve 48. Opposite ends of the cylinder 42 are also connected by aby-pa'ss 49 the end of which that is disposed adjacent the sage ll iscontrolled by an outwardly opening check valve 50, While the oppositeend of the by-pass 49 is controlled by an outwardly opening check valve51. The bypass 49 is provided. intermediate its ends with a dischargeopening surrounded by a threaded nipple on which is engaged a pipe 54:leading to a suitable receptacle (not shown).

In the operation of the device same is applied in the necessary and wellknown manner and the actuation of the pump C instituted. At this timethe valve 18 is of course in closed position and therefore no milkingoperation will be performed, the valve 3; responding to the suction pumpto admit air and relieve the vacuum caused by the pas-' operation of thepump. To institute the operation of milking the rod 23 is movedoutwardly and the float 16 and valve 18 elevated. The suction of tliepump will now be transferred to the interior of the case A and fromthere to the teat cups. The milk flowing intothe case A will now sustainthe float 16 elevated and the valve 18 open. The rod 23 is now returnedto its original position and the 'operation continued with. 'hen the Howof milk ceases the float 16 will fall and the valve 18 will close whenthe pump again becomes ineffective with respect to the interior-of thecase and injury to the animal be prevented.

The milk drawn in by the pump G on one stroke of the piston 43 passes bythe *alve 45 and on the opposite stroke of said piston this milk isforced by the valve 50 and through the by-pass 49 and is dischargedthrough the opening ()n the stroke of the piston 43 in the direction ofthe valve 4:) milk is drawn into the cylinder by way of the bypass 47and on the reverse stroke of said piston the accumulated milk in thecylinder is forced by the valve 51 and through the by-pass 49, beingdischarged from the latter through the opening 52.

The float 16 falls rapidly or slowly in accordance with the rate of flowof the milk from the lioat chamber Bthrough the port 15, and since thelatter is controlled by the screw 16, the stopping of the apparatus canbe accurately timed.

What is claimed is:

A milking apparatus including a vacuum casing lniving ports in its upperportion for connection with teat engaging members, a vacuum conduit incommunication with said casing. a valve for closing said conduit, achamber in the casing adapted to IOCUlK) discharge of milk from theports and having an outlet, a float in the chamber and connected withthe valve for operating same, and means for varying flow of milk throughsaid port.

In testimony whereof, I atlix my signature, in the presence of twowitnesses.

Witnesses SPENCER, A. J.

Wine.

